Poly Variable Capacitor Dual 335pf and 20pf

$4.99

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SKU: VarCap335 Category:

Description

These Polyvaricon type Variable Capacitors have four gangs, two 0-335pf sections and two 0-20pf sections.

The Variable Capacitors have four built in trimmers of 0-8pf each. The two 0-20pf sections have dedicated trimmers. The other two trimmers have external pin connections.

I had these special made for me by the manufacturer. The mounting and shafts are the same for all my plastic variable capacitors.

The Polyvaricon variable capacitors are a little over 3/4 inch square and 5/8 inch high. The shaft is 1/4 diameter and protrudes about 3/16 inch. The shaft and two mounting holes are both tapped metric M2.5.

With the trimmers fully open and the external trimmers not connected you can get these combinations. Sections can be connected together for different tuning ranges. There is no tracking error in connecting them together.

0-335pf + 0-20pf = 0-355pf — With this combination you can have two 0-355pf sections.

With above combination and the Trimmers for each section set to full you can have two 16-371pf sections out of this Variable Capacitor.

0-335pf + 20pf +20pf = 0-375pf and one 0-355pf

0-335pf + 0-335pf = 0-670pf and two 0-20pf

0-335 + 0-335pf + 0-20pf = 0-690pf and one 0-20pf

0-335pf + 0-335 + 0-20pf + 0-20pf = 0-710pf

The maximum rated voltage is 100 volts.

Screws and washers for the variable capacitor are available in two lengths: 5/32″ (4mm) and 3/16″ (5mm).

CAUTION: The internal parts of the variable capacitor can be damaged easily if the screw enters the variable capacitor too far. Please check for clearance.

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Have a question or something to discuss?


Guest
Ray
June 12, 2016

what is the breakdown voltage of these caps?

Support
Mike Lowe
June 13, 2016

These are rated for a maximum of 100 volts.

Guest
John
September 1, 2016

Hi, will the large knob fit the poly cap ? Are the caps sealed, or can they be sealed with paint ? And do they work well for a crystal radio ? Thank you.

Support
Mike Lowe
September 2, 2016

Hi, the Large Extension and Knob for Variable Capacitor (SKU: LrgExtKnob) will fit the poly variable capacitors. The Large Knob 1.32 Diameter will fit the same shaft, however it does not include the shaft for the poly variables. The variable capacitors are not sealed, they are enclosed in a plastic casing. I don’t think they would be easy to seal. Yes! they work great for crystal radios.

Guest
John
September 8, 2016

Hi Mike, The poly caps you sent me are GREAT ! Do you have brass 2.5mm x 7mm bolts for these ? Thank you. 🙂

Support
Mike Lowe
September 8, 2016

Hi John, Thanks, I’m glad to hear they’re great! I do not have brass bolts and/or 7mm bolts. I have 4mm and 5mm zinc mounting bolts only.

Guest
John
September 8, 2016

Ok thank you. 🙂

Guest
John
September 8, 2016

Hi, are the 2.5mm x 5mm zinc bolts yellow or the silver …?

Guest
ron
April 26, 2018

do you have a large stock of these I will be needing more they work great on crystal radios

Support
Mike Lowe
April 26, 2018

Yes, we have a fairly lare supply of these.